Concentrator



2 SheetsSheet 1.

J. JACOBS. GONGENTRATOR.

(No Model.)

No. 547,640. Patented Oct. 8, 1895.

AN DREW B.GRAKAM. PNGTOUMQWASHINGTUN D C 2 Sheets-Sheet 2..

J. JACOBS. GONGENTRATOR.

(N0 Model.)

Patented Oct. 8, 1895.

uni 441- wt/M 1;)

UNITED STATES Y PATENT OFF-ICE..

JEHU JACOBS, OF HENLEY, CALIFORNIA.

CONCENTRATOR.

SPECIFICATION forming part of Letters Patent No. 547,640, dated October8, 1895. A

Application filed February 1, 1895. Serial No. 537,002. (No model.)

To all whom it may concern.-

Be it known that I, J EHU JACOBS, a citizen of the United States,residing at Henley, county of Siskiyou, State of California, haveinvented an Improvement in Concentrators; and I hereby declare thefollowing to be a full, clear, and exact description of the same.

My invention relates to an apparatus for separating Valuable preciousand heavy metals and sulphurets from worthless sand and light tailings.

It consists of the constructions and combinations of devices hereinafterdescribed and claimed.

Figure 1 is a longitudinal vertical section taken through the apparatus.Fig. 2 is a plan view with part of the tables broken away to show themechanism beneath. Fig. 3 is a transverse section on the dotted line asx of Figs. 1 and 2. Fig. 4: is a detached view of a slotted crank N.Fig. 5 is a modification of Fig. 4.

A is a frame or bed upon which the various parts of the apparatus aresupported and carried. The surfaces, over which the pulp or sand to beacted on flows, are flat and are inclined with relation to each other,as will be hereinafter described.

B B are side rails or frames to which the tables 0, D, and E areattached. These side frames are suspended at one end by links F fromasuitable supporting-bar G with adj ustable bolts, having eyes or hooksfor their suspension and nuts by which they are elevated or depressed toregulate the incline of the table.

The upper end of the apparatus rests upon a head-block H, upon which itis slidable bot-h longitudinally and transversely.

I is a bumper fixed upon the lower part of the table and adapted tostrike against the head-block H when the table is released from theaction of the cam by which it is moved away from the head-block, andthis bumping motion tends to separate the sulphurets and heaviermaterial from the lighter sand and cause it to move up the inclinedsurfaces of the tables to be discharged at the upper end, while thewater which is delivered upon the table washes'the sand and lightermaterial down to the discharge end.

The table C, upon which the material is first the edge and to keep alittle water on the top of the table. From the edge of the table D thematerial falls upon the inclined table E and the sand flows down so as.to discharge over the lower end of this table. Connected with the upperend of this table and beneath the tables 0 and D is another inclinedtable K, the lower edge of which meets and forms a joint with the tableE. The rear edge, extending up beneath the table C, is connected withthe frame B by means of adj usting-screws L, by

which I am enabled to regulate its inclination. The edge which meets theedge of the table E is connected therewith by plates E, which allow itto move about these hinges and enables me to raise or lower the rearedge of the table K to give this table the proper inclination, and anysulphurets or heavy valuable material which may have passed over theedge of the table D and fallen upon the table E will be caused to moveup the incline of the table K by the concussion caused by the swingingof the table longitudinally and its abrupt striking against the stop.This acts in the same manner as with the table 0 above to discharge anyheavy valuable material over the upper edge of the plate or table.

In order to produce all of the necessary movements in asingle operation,I have shown a driving-shaftltl, j ournaled parallel with the table atone side and a littlebelow. Power is communicated to this shaft by anyusual or suitable mechanism, so as to rotate it. Up-

on the ends of the shaft are slotted cranks N,

(see Fig. 4,) the crank-pins of which may be adjustable in the slots, orthe cranks themselves may be adjustable upon the ends of the shaft, (seeFig. 5,) the object being in either case to lengthen or shorten thestroke.

0 are connecting-rods having one end adapted to fit the crank-pins, andthe other ends joint.

are connected with pins P, fixed upon the lower side of the table, nearits opposite ends, so that as the crank-shaft rotates the table will beoscillated from side to side.

Q is a shaft extending transversely beneath the upper end of the table,suitably journaled in boxes upon the frame and having fixed upon theend, nearly beneath the center of the table, a cam R. driven from theshaft M by means of bevelgears S, fixed upon the two shafts M and Q, andmeshing with each other.

The cam R may be double or single, and its curved face is grooved orhollowed out, as shown.

'1 is a lever-arm having a lug T projecting from the bottom, and thislug fits in a socket made in the end of the frame beneath the upper endof the table, so that the end of the lever T projecting beneath the camis acted upon by the cam and the lever is caused to tilt at each strokeof the cam moving about its fulcrum-point T. The opposite end of thelever T projects to some distance outward and has fixed upon it a weightwhich is adjustable so as to bring the lever down with any degree offorce after it has been moved by the cam.

U is an inclined standard projecting up wardly from the top of the leverT, having a socket made in the upper end into which fits a projection orspur Vfrom the upper end of the table 0.

It will be understood that the pivotal points T and V are notnecessarily made in this particular manner, as they might be fixedpivots; but for convenience, and to allow sufficient freedom of motionwithout too great a wear of parts, I have shown this construction.

The operation will now be as follows: As the shaft M is rotated, thepitmen or connectingrods 0 will produce a constant side-shaking motionof the table, the action of the cam R upon the shaft Q, and upon thelever T tilting it about its fulcrum-point, thus moving the arm Uforward and moving the table at the same time. The relation of the armsT and U is such that when the table swings longitudinally it alsoreceives a lifting or tossing motion of the upper end, which facilitatesthe separation and movement of the material upon it. The loose pivotalconnections allow of this forward movement and at the same time allowthe side movements of the table, as these connections form a sort ofuniversal As soon as the point of the cam releases the end of the leverT, the weight upon the outer end of the lever, as wellas the tendency ofthe table itself to swing back upon its suspending-rods, brings itsuddenly back to its original position, and the bumper I, strikingagainst the head-block II, produces a shock which acts, asbeforedescribed, to move the heavier materials up the inclined surfaces.The shaking motions keep the material upon the tables constantlyagitated and This shaft is loosened up, with a sufficient supply ofwater to thin them down, so that the heavier material will always settleto the bottom, while the lighter flows off.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

1. A concentrator consisting of inclined suspended tables over which thematerial to be separated is caused to flow, a longitudinal crank shaftand a transverse shaft geared one to another and connections from thelongitudinal shaft to the table, a cam on a transverse shaft, afulcrumed lever having an arm 0011* neeted with the table and a secondarm in the path of said cam whereby the tables are caused to oscillatesidewise and endwise, and are given a slight lifting motion.

2. A concentrator consisting of a suspended table, a longitudinal shaftand connections therefrom to the table, a transverse shaft, gearinginterposed between said shafts, a fulcrumed lever having an armconnected with the table and a second arm adapted to be actuated by therotation of the transverse shaft whereby a combined longitudinal andlifting movement is given the table, and a means whereby the table isabruptly stopped after it has been moved forward.

3. In aconcentrator, inclined suspended and connected tables, mechanismconsisting of the longitudinal shaft with cranks and connecting rodswhereby a side shaking motion of the table is produced, a transverseshaft, an intermediate mechanism whereby it is driven from thelongitudinal shaft, a cam or tappet fixed upon said shaft, a lever armfulcrumed upon the frame having one end adapted to be engaged by thetappet and an arm extending upwardly and connected with the tablewhereby a combined longitudinal and lifting movement is given the table.

4. A concentrator consisting of an inclined receiving table withsubdividing channels, an approximately level table upon which thematerial is delivered from the first table and overlapping plates at thedischarge end of the second table, a third inclined table situated belowthe level of the second table upon which the material from the uppertable is delivered and over which the waste material is discharged, aninclined adjustable table hinged to the rear edge of said lowcr'tablehaving screws by which its angle of inclination may be adjusted and amechanism whereby a longitudinal and transverse oscillating motion isproduced, a head-block and a bumper by which the return of the table isabruptly stopped after it has been moved forward.

In witness whereof I have hereunto set my hand.

JEIIU JACOBS. \Vitnesses:

THOMAS J ONES, JACOB A. Sraonnon.

ICC

